Intracranial resistive index (RI) values in normal term infants during the first day of life
Intracranial resistive index (RI) values in normal term infants during the first day of life
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DOI：
10.1007/s002470000286
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发表时间：
2000-09-01
影响因子：
2.3
通讯作者：
Seibert, JJ
中科院分区：
文献类型：
--
作者：
Allison, JW;Faddis, LA;Seibert, JJ
目的.本研究的目的是确定正常的阻力指数（RI）值的足月新生儿在生命的第一天作为一个正在进行的前瞻性研究的RI值在足月儿围产期窒息。材料和方法的一部分。40例正常足月新生儿在出生后24小时内进行了颅脑超声和多普勒检查。对双侧颈内动脉、大脑前动脉和大脑中动脉进行经<$门多普勒检查。此外，对双侧大脑中动脉进行经颞叶多普勒。计算所有询问血管的平均和中位RI值。结果：大脑中动脉的测量值与正常人比较，差异有统计学意义（P < 0. 05）。所有询问血管的总体平均RI为0.726，标准差为0.057。两种方法测量的大脑中动脉RI值差异无统计学意义。计算足月儿出生后第一天的正常颅内RI值，并与围产期窒息足月儿的RI值进行比较。
Purpose. The purpose of this study was to determine normal resistive index (RI) values for term neonates during the first day of life as part of an ongoing prospective study of RI values in term infants with perinatal asphyxia.Materials and methods. Forty normal term neonates underwent cranial sonography and Doppler during the first 24 h after birth. Transfontanelle Doppler was performed of the internal carotid,anterior cerebral, and middle cerebral arteries bilaterally. In addition, transtemporal Doppler was performed of the middle cerebral arteries bilaterally. Mean and median RI values were calculated in all vessels interrogated. The transfontanelle and transtemporal middle cerebral artery measurements were compared using paired t-tests.Results. The overall mean RI of all interrogated vessels was 0.726 with a standard deviation of 0.057. The mean RI value in the middle cerebral arteries was not significantly different with the two different measurement techniques.Conclusion. Normal intracranial RI values for a term infant in the first day of life were calculated for comparison with RI values in term infants with perinatal asphyxia.